gstreamer/gst/autoplug/gstsearchfuncs.h
Thomas Vander Stichele a967370df5 gst-indent run on core
Original commit message from CVS:
gst-indent run on core
2004-03-13 15:27:01 +00:00

72 lines
2.8 KiB
C

/* GStreamer
* Copyright (C) 1999-2002 Erik Walthinsen <omega@cse.ogi.edu>
* 2000-2002 Wim Taymans <wtay@chello.be>
*
* gstsearchfuncs.h: Header for gstsearchfuncs.c
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_SEARCHFUNCS_H__
#define __GST_SEARCHFUNCS_H__
#include <gst/gst.h>
/* placeholder for maximum cost when plugging */
#define GST_AUTOPLUG_MAX_COST 999999
/* struct for a node, in the search tree */
typedef struct _GstAutoplugNode GstAutoplugNode;
struct _GstAutoplugNode
{
GstAutoplugNode *prev; /* previous node */
GstElementFactory *fac; /* factory of element to connect to */
GstPadTemplate *templ; /* template which can connect */
guint cost; /* total cost to get here */
GstPadTemplate *endpoint; /* pad template that can connect to sink caps */
};
/* helper functions */
gboolean gst_autoplug_caps_intersect (const GstCaps * src,
const GstCaps * sink);
GstPadTemplate *gst_autoplug_can_connect_src (GstElementFactory * fac,
const GstCaps * src);
GstPadTemplate *gst_autoplug_can_connect_sink (GstElementFactory * fac,
const GstCaps * sink);
GstPadTemplate *gst_autoplug_can_match (GstElementFactory * src,
GstElementFactory * dest);
gboolean gst_autoplug_factory_has_direction (GstElementFactory * fac,
GstPadDirection dir);
#define gst_autoplug_factory_has_sink(fac) gst_autoplug_factory_has_direction((fac), GST_PAD_SINK)
#define gst_autoplug_factory_has_src(fac) gst_autoplug_factory_has_direction((fac), GST_PAD_SRC)
/* cost functions */
#define gst_autoplug_get_cost(fac) 1
/* factory selections */
GList *gst_autoplug_factories_sinks (GList * factories);
GList *gst_autoplug_factories_srcs (GList * factories);
GList *gst_autoplug_factories_filters (GList * factories);
GList *gst_autoplug_factories_filters_with_sink_caps (GList * factories);
GList *gst_autoplug_factories_at_most_templates (GList * factories,
GstPadDirection dir, guint maxtemplates);
/* shortest path algorithm */
GList *gst_autoplug_sp (const GstCaps * src_caps, const GstCaps * sink_caps,
GList * factories);
#endif /* __GST_SEARCHFUNCS_H__ */